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"Being able to participate in games and activities with their friends" is one of the things that matters most to boys with haemophilia. At present, there is a lack of robust evidence to determine whether muscle strengthening exercise can improve or negatively affect outcomes for young children with haemophilia. With the help of boys with haemophilia, their parents and physiotherapists the investigators have developed an exercise programme designed to increase muscle strength. Using this intervention the investigators will undertake a single-blinded, two-arm pragmatic randomised controlled trial (RCT) of a 12-week intervention verses usual care of boys with haemophilia aged 6-12 years of age.
Full description
Children are born with haemophilia. Females carry the disorder and usually males are affected. It is a disorder affecting 1:10000 people where the blood does not clot normally, leading to bleeding into muscles and joints. As a result, muscles become weak. Joints become painful and difficult to move. "Being able to participate in games and activities with their friends" is one of the things that matters most to boys with haemophilia. "What is the role of exercise for both prevention and treatment of joint damage in haemophilia?" is one of the top unanswered questions that concern patients, carers and healthcare professionals most. At present, there is a lack of robust evidence to determine whether muscle strengthening exercise can improve or negatively affect outcomes for young children with haemophilia. With the help of boys with haemophilia, their parents and physiotherapists the investigators have developed an exercise programme designed to increase muscle strength. The investigators think the exercise programme might have an effect on pain and movement in participants joints, help them participate in games and activities with their friends and improve their health in the long term. The investigators recently showed the exercise programme had no harmful effects, was acceptable to children with haemophilia and that the participants were willing to participate in a study to answer the question, "does muscle strengthening help improve the long term health of children with haemophilia?" To answer this question, the investigators will allocate 66 boys with haemophilia to a group that is asked to complete the 12-week exercise routine to strengthen their leg muscles and another 66 boys to a group that does not do the exercises. The boys will be allocated at random, so that each boy has an equal chance of being in either group. Random allocation helps ensure that two similar groups of boys will be compared. The investigators will monitor the boys throughout the study by measuring their muscle strength, how far they can walk in six-minutes and time taken to ascend and descend 12 steps. The investigators will also record how physically active the boys are using a wrist band as well as how satisfied they are with their health. The study will be managed by a group of health care professionals and researchers with experience and expertise in carrying out this type of research. In addition, the investigators will include parents of boys with haemophilia in the research team to provide invaluable lived experience of living with the condition. So that people hear about what the investigators learn in the study, the investigators will report the findings to other researchers using journals, relevant health care professionals through face to face meetings, and children with haemophilia and their families through newsletters and presentations at Haemophilia Society meetings.
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Inclusion criteria
• Children aged 6-12 years, with severe or moderate haemophilia A or B
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132 participants in 2 patient groups
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Central trial contact
David Stephensen, PhD
Data sourced from clinicaltrials.gov
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